<template>
  <div class="resource-list">
    <el-card class="box-card">
      <div class="clearfix">
        <el-form ref="form"
                 :model="form"
                 label-width="80px">
          <el-form-item prop="name"
                        label="资源名称">
            <el-input v-model="form.name"></el-input>
          </el-form-item>
          <el-form-item prop="url"
                        label="资源路径">
            <el-input v-model="form.url"></el-input>
          </el-form-item>
          <el-form-item prop="categoryId"
                        label="资源分类">
            <el-select v-model="form.categoryId"
                       placeholder="请选择资源分类"
                       clearable>
              <el-option :label="item.name"
                         :value="item.id"
                         v-for="item in resourceCategories"
                         :key="item.id"></el-option>
            </el-select>
          </el-form-item>
          <el-form-item>
            <el-button type="primary"
                       @click="onSubmit"
                       :disabled="isLoading">查询搜索</el-button>
            <el-button @click="onReset"
                       :disabled="isLoading">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
    </el-card>
    <el-card shadow="hover">
      <el-button @click="addClass">添加资源</el-button>
      <el-button @click="addResource">资源分类</el-button>
    </el-card>
    <el-card shadow="hover">
      <el-table :data="resources"
                style="width: 100%; margin-bottom: 20px"
                v-loading="isLoading">
        <el-table-column type="index"
                         label="编号"
                         width="100">
        </el-table-column>
        <el-table-column prop="name"
                         label="资源名称"
                         width="180">
        </el-table-column>
        <el-table-column prop="url"
                         width="180"
                         label="资源路径">
        </el-table-column>
        <el-table-column prop="description"
                         width="180"
                         label="描述">
        </el-table-column>
        <el-table-column prop="createdTime"
                         label="添加时间">
        </el-table-column>
        <el-table-column width="180"
                         label="操作">
          <template slot-scope="scope">
            <el-button size="mini"
                       @click="handleEdit(scope.row)">编辑</el-button>
            <el-button size="mini"
                       type="danger"
                       @click="handleDelete(scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>

      <!--
        total 总记录数
        page-size 每页大小
        分页组件会自动根据 total 和 page-size 计算出一共分多少页
       -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :disabled="isLoading"
                     :current-page.sync="form.current"
                     :page-sizes="[5, 10, 20]"
                     :page-size="form.size"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="totalCount">
      </el-pagination>
    </el-card>

    <el-dialog :title="isEdit ? '编辑角色' : '添加角色'"
               :visible.sync="dialogVisible"
               width="50%">
      <create-or-edit v-if="dialogVisible"
                      :resource-id="resourceId"
                      :is-edit="isEdit"
                      @success="onSuccess"
                      @cancel="dialogVisible = false" />
    </el-dialog>
  </div>
</template>

<script lang="ts">
import Vue from 'vue'
import { getResourcePages } from '@/services/resource'
import { getResourceCategories } from '@/services/resource-category'
import { Form } from 'element-ui'
import CreateOrEdit from './create-edit.vue'

export default Vue.extend({
  name: 'ResourceList',
  data() {
    return {
      resources: [], // 资源列表
      form: {
        name: '',
        url: '',
        current: 1, // 默认查询第1页数据
        size: 5, // 每页大小
        categoryId: null // 资源分类
      },
      totalCount: 0,
      resourceCategories: [], // 资源分类列表
      isLoading: true, // 加载状态
      dialogVisible: false,
      isEdit: true,
      resourceId: null
    }
  },
  components: {
    CreateOrEdit
  },
  created() {
    this.loadResources()
    this.loadResourceCategories()
  },

  methods: {
    async loadResourceCategories() {
      const { data } = await getResourceCategories()
      this.resourceCategories = data.data
    },

    async loadResources() {
      this.isLoading = true // 展示加载中状态
      const { data } = await getResourcePages(this.form)
      this.resources = data.data.records
      this.totalCount = data.data.total
      this.isLoading = false // 关闭加载中状态
    },

    onSubmit() {
      this.form.current = 1 // 筛选查询从第 1 页开始
      this.loadResources()
    },

    handleEdit(item: any) {
      this.isEdit = true
      this.dialogVisible = true
      this.resourceId = item.id
    },

    handleDelete(item: any) {
      console.log('handleDelete', item)
    },

    handleSizeChange(val: number) {
      this.form.size = val
      this.form.current = 1 // 每页大小改变重新查询第1页数据
      this.loadResources()
    },

    handleCurrentChange(val: number) {
      // 请求获取对应页码的数据
      this.form.current = val // 修改要查询的页码
      this.loadResources()
    },

    onReset() {
      ;(this.$refs.form as Form).resetFields()
      this.form.current = 1 // 重置回到第1页
      this.loadResources()
    },
    addResource() {
      this.$router.push({
        name: 'resource-category'
      })
    },
    addClass() {
      this.isEdit = false
      this.dialogVisible = true
    },
    onSuccess() {
      this.dialogVisible = false // 关闭对话框
      this.loadResources() // 重新加载数据列表
    }
  }
})
</script>

<style lang="scss" scoped></style>
